West Ham United have had a loan bid for Boca Juniors striker Pablo Mouche accepted but the deal is being held up as the club are waiting for him to obtain a passport.
Mouche, 23, has also attracted attention from Blackburn and Birmingham but West Ham believe they are now in pole position to complete the deal.
However, although his grandparents have European connections, Mouche is still to secure a passport.
A West Ham insider told ESPNsoccenet on Sunday: "He is supposed to arrive at Upton Park soon, but he hasn't yet. The club is waiting on him getting a passport via grandparents. It might not be quick enough."
Mouche is hoping to follow in the footsteps of Carlos Tevez, who began his career with Boca Juniors and later joined West Ham before moving on to Manchester United and then Manchester City.